Diesel engine injector puller

ABSTRACT

A pair of elongated pivotally mounted jaws depend from a mounting housing wherein a camming member is vertically adjustable so as to engage the jaws above the points of pivotal mounting thereof and effect a corresponding inward swinging of the lower gripping ends. The camming member is adjusted by an elongated adjusting bolt passing through a retaining bar fixed to the lower part of the housing and extending upwardly in threaded engagement with the camming member. A hammer mounting pulling shaft can be coupled to the upper end of the adjusting bolt.

nited States Patent 1 Gadberry 1 DIESEL ENGINE INJECTOR PULLER [76]Inventor: William A. Gadberry, 1280 Folsom Court, Coquille, Oreg. 97423[22] Filed: Sept. 24, 197] [21] Appl. No.: 183,309

[52} US. Cl. 29/254 [51] Int. Cl B23p 19/04 [58] Field of Search 29/254,255, 261,

[56] References Cited UNITED STATES PATENTS 1,519,067 12/1924 Smith29/256 2,170,461 8/1939 Pepperdine.... 2,296,119 9/1942 Ringrose 29/26111 3,739,452 5'] lune l9, W73

Primary Examiner-Granville Y Custer, Jr.

Assistant Examiner-J. C. Peters Attorney-Clarence A. O'Brien and HarveyB. Jacobson [57] ABSTRACT A pair of elongated pivotally mounted jawsdepend from a mounting housing wherein a eamming member is verticallyadjustable so as to engage the jaws above the points of pivotal mountingthereof and effect a corresponding inward swinging of the lower grippingends. The camming member is adjusted by an elongated adjusting boltpassing through a retaining bar fixed to the lower part of the housingand extending upwardly in threaded engagement with the camming member. Ahammer mounting pulling shaft can be coupled to the upper end of theadjusting bolt.

6 Claims, 4 Drawing Figures PAIENTEB 9'975 3v 739.452

sum 1 er 2 Fig.2

William A Gadbezry 1.\' II'IENTOR.

1 m WM.

WW Em PATENTEDJUMQIW 3.739.452

SHEEI 2 HF 2 William A. Gadberry 1N VliN'I'OK.

andpaway Fm DIESEL ENGINE INIECTUR FULLER The present inventiongenerally relates to pullers, and is more particularly concerned with auniquely constructed puller particularly adapted for use in removingdiesel engine injectors.

It is an intention of the invention to provide an injector puller which,while of a basically simple construction, incorporates novel structuralfeatures which result in an easily mounted and adjusted device enablingthe application of a substantial pulling force in order to effectivelyextract an injector rapidly and without undue effort.

Other objects of the invention include the provision of an extractor orpuller which can accommodate either a lifting bar or a sliding hammerforce applying means, and includes provision for a slightly off-centerpull should such be necessary in effecting the removal.

Basically, the puller includes a pair of elongated jaws pivotallyaffixed, below the upper ends thereof, to a mounting base in the natureof a rectangular housing. A camming member is positioned between theupper ends of the jaws above the pivot points and is selectively moveddownward so as to effect an outward camming of these upper ends andacorresponding inward camming of the lower gripping ends of the jaws intogripping engagement with the injector to be pulled. The adjustment ofthe cam or camming member is effected by an adjusting bolt which extendsupwardly through the base, being rotatablyengaged by a crossbar affixedto the housing between the jaws below the point of pivotal mountingthereof. The upper end of the bolt is threadedly received through aninternally threaded bore within the cam. The pulling force can beeffected through a sliding hammer mounted on an elongated rod which iscoupled to the upper end of the adjusting bolt whereby the upwardpulling force is applied to the housing supported jaws below the pointat which the jaws are mounted.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

FIG. I is a perspective view of the injector puller;

FIG. 2 is an enlarged cross-sectional detail of the puller mounted on aninjector;

FIG. 3 is an exploded perspective view of the gripping components of thepuller; and

FIG. 4 is a cross-sectional view of the puller with modified grippingends on the jaws.

Referring now more specifically to the drawings, reference numeral isused to designate the puller comprising the instant invention. Thepuller 10 includes a pair of vertically elongated jaws I2 having uppermanipulating ends 14 and lower gripping ends 16.

A mounting base, in the nature of an elongated rectangular housing 18including opposed side walls 20 and opposed end walls 22, receives theupper portions of the jaws 12. The jaws 12 are in turn pivotally mountedby a pair of elongated pivot pins 24 which extend through the jaws belowthe upper manipulating ends 14 thereof and engage the opposed side walls20. As will be appreciated from FIG. 2, the jaws 12 generally paralleleach other and are set inwardly from the opposed end walls 22 so as toenable an inward and outward swinging thereof sufficient so as to enablea proper ma nipulation of the jaws 112.

The inner surface of each of the jaws I2, at the upper manipulating endI4 thereof, includes an upwardly and outwardly inclined camming surfaceas. The lower gripping end 11s of each of the jaws I2 has the inner facethereof specifically configured so as to engage the outer end of theparticular injector 28 to be pulled. In the case of the injector shownin FIG. 2, the gripping end of each jaw will include a multiple steppedconfiguration closely conforming to the stepped configuration of theouter end of the injector and providing multiple bearing surfacesbetween the jaws I2 and the injector 28. In the case of the injector 28'shown in FIG. 4, a single intumed or inwardly directed rib will beprovided at the gripping end 16 of each jaw l2. With regard to bothforms of gripping ends, such will be formed with a slight concavity onthe injector engaging surfaces so as to conform to the arcuate outerperiphery of the injector, whether it be injector 2% or injector 28'.

The mounting base 18 is completed by a crossbar Zlll passing between thejaws I2 and rigidly welded to the lower edges of the opposed side walls20. This crossbar 30 includes an elongated aperture or opening 32therethrough which receives an upwardly projecting threaded adjustingbolt 34. The enlarged head 36 of the adjusting bolt bears on the lowersurface of the bar 20 and is of a size so as to preclude passage of thebolt 34 upward through the enlarged or elongated opening 32. Theelongated opening 32 enables a slight lateral adjustment of the bolt 34for reasons which shall be pointed out subsequently.

The actual adjustment of the jaws I2 is effected by a. camming member 38seated within the housing I8 and in engagement with the opposed cammingsurfaces 26. This camming member 38 includes opposed inclined cammingends 40 which generally conform to the inclination of the cammingsurfaces 26 whereby a downward movement of the camming member 2% relative to the manipulating ends M of the jaws I2 will effect an outwardswinging of these ends Id and a corresponding inward swinging of thelower gripping ends l6 into gripping engagement with the outer end of aninjector to be pulled. The cam or camming member 3ft includes anelongated internally threaded bore d2 therethrough which threadedlyreceives the upper portion of the bolt 34. In this manner, rotationaladjustment of the bolt 34, the head 36 being easily engaged between thejaws I2, will produce the desired adjust ment of the cam 38 and thecorresponding swinging movement of the jaws I2. Once the jaws 112 havebeen brought into tight gripping or locked engagement with the injector24, the desired pulling force can be applied. The preferred manner ofexerting a pulling force is through the incorporation of a slidinghammer M on the injector 10. This is accomplished by coupling, throughthreaded coupling means 46, an elongated shaft 48 to the exposed upperend of the adjusting bolt 34. This shaft 48 slidably mounts the enlargedhammer 44 along the length thereof and includes a crosshead fill at theupper end thereof and a hammer engaging abutment 52 immediately belowthe crosshead or handle 50. Thus, once the puller is grip loclred to theinjector, the hammer 44 will be slid upwardly so as to sharply engagethe abutment 52, this movement being repeated sufficiently so as toeffect the desired pulling or extraction of the injector. If so desired,through the coupled engagement of the shaft 48 with the threaded bolt34, the mounting of the injector can be effected by a direct rotation ofthe shaft 48 which in turn will rotate the bolt 34 and move the cam 38to manipulate the jaws 12.

Should an off-center pull be desirble or necessary so as to effect theextraction of the injector, the elongated opening 32 through thecrossbar 30 enables a slight angular orientation of the bolt 34, shaft48 and camming member 38. This angular orientation of the camming member38 will, while causing a slightly different engagement with the cammingsurfaces 26, in no way affect the camming operation or the swingingmovement of the jaws 12, as well as locking of the jaws 12 into grippedengagement with the injector. Further, should it be considereddesirable, a lifting bar, engageable between the jaws and against thebolt head 36 or crossbar 32 can be utilized to effect the desired uppermovement of the injector rather than utilizing the sliding hammer 44 andmounting shaft 48 therefor. In either case, it will be noted that thelifting force is applied to the mounting base or housing 18 at the lowerportion thereof, below the points at which the jaws 12 are mounted, thusenabling the application of a more stable and effective lifting force.

From the foregoing, it will be appreciated that a simple although highlyeffective and uniquely constructed puller has been defined. This pullerprovides means for effectively moving a pair of opposed gripping jawsinto locked engagement with an injector, the jaws, once engaged, beinglocked into position and effectively maintained throughout the pullingoperation. The injector in turn is so structured as to enable theapplication of alternate pulling forces as well as the particulardirection along which such forces are applied.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction and operation shown anddescribed, and accordingly all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention.

What is claimed as new is as follows:

1. A puller for diesel engine injectors and the like comprising amounting base, a pair of jaws, pivot means pivotally mounting said jawson the base in generally parallel spaced relation to each other, saidjaws having first manipulating ends and second gripping ends, said pivotmeans engaging each jaw at an intermediate point therealong whereby alaterally outward movement of the first ends will result in acorresponding laterally inward movement of the second ends for agripping engagement with an injector or the like, a camming memberpositioned between said manipulating ends, and an adjusting memberengaged between the camming member and the base at a point to theopposite side of the pivot means from said camming member, saidadjusting member being adjustable to move the camming member intocamming engagement with the manipulating ends to effect an outwardmovement thereof and a corresponding inward movement of the second ends,said adjusting member comprising a threaded bolt retained for rotationalmovement by said base said camming member including an internallythreaded bore receiving said bolt whereby a rotation of said bolt willcffect a corresponding longitudinal movement of said camming member,said mounting base including a housing comprising laterally spacedparallel side walls receiving said jaws therebetween, said pivot meansmounting said jaws on said side walls, the manipulating ends of saidjaws being positioned between said walls, the gripping ends of said jawsbeing located outward of said walls, the manipulating ends of said jawsincluding a pair of facing inclined camming surfaces, said cammingmember having complemenatary camming surfaces thereon, and a bar fixedto and spanning the lower edges of said side walls between said jaws,said bar including an elongated opening therein said adjusting boltbeing vertically received through said bar for engagement with thecamming member located thereover, said elongated opening enabling alateral shifting of said bolt so as to slightly vary the angularorientation thereof.

2. The puller of claim 1 wherein said bolt extends completely through anupwardly beyond said camming member, an elongated shaft longitudinallyaligned with said bolt vertically thereabove, coupling means couplingsaid shaft to said bolt, a hammer longitudinally sidable on said shaft,and an abutment means mounted on the upper end of said shaft forselective engagement I with the hammer so as to effect an upward drivingforce thereon and a corresponding upward force on the injector engagingjaws.

3. A puller for diesel engine injectors and the like comprising amounting base, a pair of jaws, pivot means pivotally mounting said jawson the base in generally parallel spaced relation to each other, saidjaws having first manipulating ends and second gripping ends, said pivotmeans engaging each jaw at an intermediate point therealong whereby alaterally outward movement of the first ends will result in acorresponding laterally inward movement of the second ends for agripping engagement with an injector or the like, a camming memberpositioned between said manipulating ends, an adjusting member engagedbetween the camming member and the base at a point to the opposite sideof the pivot means from said camming member, said adjusting member beingadjustable to move the camming member member into camming engagementwith the mamipulating ends to effect an outward movement thereof and acorresponding inward movement of the second ends, said adjusting membercomprising a threaded bolt retained for rotational movement by saidbase, said camming member including an internally threaded borereceiving said bolt whereby a rotation of said bolt will effect acorresponding longitudinal movement of said camming member, saidmounting base including a housing comprising laterally spaced parallelside walls receiving said jaws therebetween, said pivot means mountingsaid jaws on said side walls, the manipulating ends of said jaws beingpositioned between said walls, the gripping ends of said jaws beinglocated outward of said walls, and a bar fixed to and spanning the loweredges of said side walls between said jaws, said bar including anelongated opening therein, said adjusting bolt being vertically receivedthrough said bar for engagement with the camming member locatedthereover, said elongated opening enabling a lateral shifting of saidbolt so as to slightly vary the angular orientation thereof.

4. The puller of claim 3 wherein said bolt extends completely throughand upwardly beyond said camming member, an elongated shaftlongitudinally aligned with said bolt vertically thereabove, couplingmeans coupling said shaft to said bolt, a hammer longitudinally slidableon said shaft, and an abutment means mounted on the upper end of saidshaft for selective engagement with the hammer so as to effect an upwarddriving force thereon and a corresponding upward force on the injectorengaging jaws.

5. A puller for diesel engine injectors and the like comprising amounting base, a pair of jaws, pivot means pivotally mounting said jawson the base in generally parallel spaced relation to each other, saidjaws having first manipulating ends and second gripping ends, said pivotmeans engaging each jaw at an intermediate point therealong whereby alaterally outward movement of the first ends will result in acorresponding laterally inward movement of the second ends for agripping engagement with an injector or the like, a camming memberpositioned between said manipulating ends, and an adjusting memberengaged between the camming member and the base at a point to theopposite side of the pivot means from said camming member, saidadjusting member being adjustable to move the camming member intocamming engagement with the manipulating ends to effect an outwardmovement thereof and a corresponding inward movement of the second ends,said adjusting member comprising an elongated bolt retained by saidbase, said camming member including a bore receiving said bolt for anadjustment of said camming member along said bolt, said mounting baseincluding a housing comprising laterally spaced parallel side wallsreceiving said jaws therebetween, said pivot means mounting said jaws onsaid side walls, the gripping ends of said jaws being located outward ofsaid walls, and a bar fixed to and spanning the lower edges of said sidewalls between said jaws, said bar including an opening therein, saidadjusting bolt being vertically received through said bar opening forengagement with the camming member located thereover.

6. The pulley of claim 5 wherein the bolt receiving opening in said baris laterally elongated, said elongated opening enabling a lateralshifting of said bolt so as to slightly vary the angular orientationthereof.

1. A puller for diesel engine injectors and the like comprising amounting base, a pair of jaws, pivot means pivotally mounting said jawson the base in generally parallel spaced relation to each other, saidjaws having first manipulating ends and second gripping ends, said pivotmeans engaging each jaw at an intermediate point therealong whereby alaterally outward movement of the first ends will result in acorresponding laterally inward movement of the second ends for agripping engagement with an injector or the like, a camming memberpositioned between said manipulating ends, and an adjusting memberengaged between the camming member and the base at a point to theopposite side of the pivot means from said camming member, saidadjusting member being adjustable to move the camming member intocamming engagement with the manipulating ends to effect an outwardmovement thereof and a corresponding inward movement of the second ends,said adjusting member comprising a threaded bolt retained for rotationalmovement by said base said camming member including an internallythreaded bore receiving said bolt whereby a rotation of said bolt willeffect a corresponding longitudinal movement of said camming member,said mounting base including a housing comprising laterally spacedparallel side walls receiving said jaws therebetween, said pivot meansmounting said jaws on said side walls, the manipulating ends of saidjaws being positioned between said walls, the gripping ends of said jawsbeing located outward of said walls, the manipulating ends of said jawsincluding a pair of facing inclined camming surfaces, said cammingmember having complemenatary camming surfaces thereon, and a bar fixedto and spanning the lower edges of said side walls between said jaws,said bar including an elongated opening therein said adjusting boltbeing vertically received through said bar for engagement with thecamming member located thereover, said elongated opening enabling alateral shifting of said bolt so as to slightly vary the angularorientation thereof.
 2. The puller of claim 1 wherein said bolt extendscompletely through an upwardly beyond said camming member, an elongatedshaft longitudinally aligned with said bolt vertically thereabove,coupling means coupling said shaft to said bolt, a hammer longitudinallysidable on said shaft, and an abutment means mounted on the upper end ofsaid shaft for selective engagement with the hammer so as to effect anupward driving force thereon and a corresponding upward force on theinjector engaging jaws.
 3. A puller for diesel engine injectors and thelike comprising a mounting base, a pair of jaws, pivot means pivotallymounting said jaws on the base in generally parallel spaced relation toeach other, said jaws having first manipulating ends and second grippingends, said pivot means engaging each jaw at an intermediate pointtherealong whereby a laterally outward movement of the first ends willresult in a corresponding laterally inward movement of the second endsfor a gripping engagement with an injector or the like, a camming memberpositioned between said manipulating ends, an adjusting member engagedbetween the camming member and the base at a point to the opposite sideof the pivot means from said camming member, said adjusting member beingadjustable to move the camming member member into camming engagementwith the mamipulating ends to effect an outward movement thereof and acorresponding inward movement of the second ends, said adjusting membercomprising a threaded bolt retained for rotational movement by saidbase, said camming member including an internally threaded borereceiving said bolt whereby a rotation of said bolt will effect acorresponding longitudinal movement of said camming member, saidmounting base including a housing comprising laterally spaced parallelside walls receiving said jaws therebetween, said pivot means mountingsaid jaws on said side walls, the manipulating ends of said jaws beingpositioned between said walls, the gripping ends of said jaws beinglocated outward of said walls, and a bar fixed to and spanning the loweredges of said side walls between said jaws, said bar including anelongated opening therein, said adjusting bolt being vertically receivedthrough said bar for engagement with the camming member locatedthereover, said elongated opening enabling a lateral shifting of saidbolt so as to slightly vary the angular orientation thereof.
 4. Thepuller of claim 3 wherein said bolt extends completely through andupwardly beyond said camming member, an elongated shaft longitudinallyaligned with said bolt vertically thereabove, coupling means couplingsaid shaft to said bolt, a hammer longitudinally slidable on said shaft,and an abutment means mounted on the upper end of said shaft forselective engagement with the hammer so as to effect an upward drivingforce thereon and a corresponding upward force on the injector engagingjaws.
 5. A puller for diesel engine injectors and the like comprising amounting base, a pair of jaws, pivot means pivotally mounting said jawson the base in generally parallel spaced relation to each other, saidjaws having first manipulating ends and second gripping ends, said pivotmeans engaging each jaw at an intermediate point therealong whereby alaterally outward movement of the first ends will result in acorresponding laterally inward movement of the second ends for agripping engagement with an injector or the like, a camming memberpositioned between said manipulating ends, and an adjusting memberengaged between the camming member and the base at a point to theopposite side of the pivot means from said camming member, saidadjusting member being adjustable to move the camming member intocamming engagement with the manipulating ends to effect an outwardmovement tHereof and a corresponding inward movement of the second ends,said adjusting member comprising an elongated bolt retained by saidbase, said camming member including a bore receiving said bolt for anadjustment of said camming member along said bolt, said mounting baseincluding a housing comprising laterally spaced parallel side wallsreceiving said jaws therebetween, said pivot means mounting said jaws onsaid side walls, the gripping ends of said jaws being located outward ofsaid walls, and a bar fixed to and spanning the lower edges of said sidewalls between said jaws, said bar including an opening therein, saidadjusting bolt being vertically received through said bar opening forengagement with the camming member located thereover.
 6. The pulley ofclaim 5 wherein the bolt receiving opening in said bar is laterallyelongated, said elongated opening enabling a lateral shifting of saidbolt so as to slightly vary the angular orientation thereof.